
User Manual
GWR High Speed Cellular Router Series
133
Accepts telnet connection from the outside to router’s WAN interface, for management over CLI
interface
4.
Allow HTTP on ppp_0
Accepts WEB traffic from the outside to router’s WAN interface, for management over WEB interface
5.
Allow PING on ppp_0-with DDoS filter
ICMP traffic to WAN interface of the router is allowed with prevention of Distributed Denial-of-service
attack
Allow RIP protocol
6.
Allow RIP on ppp_0
7.
Allo RIP on ppp_0 – route
Allow GRE protocol
8.
Allow GRE tunnels on ppp_0
9.
Allow GRE Keepalive on ppp_0
Allow IPSec protocol
10.
Allow IPSec tunnels on ppp_0 – protocol
11.
Allow IPSec tunnels on ppp_0 – IKE
12.
Allow IPSec tunnel on ppp_0 – IKE_NATt
Allow OpenVPN protocol
13.
Allow OpenVPN tunnels on ppp_0 – UDP
14.
Allow OpenVPN tunnels on ppp_0 – TCP
15. Allow SNMP on ppp_0
SNMP requests are allowed to be sent to the router over WAN interface
16.
Allow MODBUS on ppp_0
MODBUS conversion over default port UDP 502 is permitted
17.
REJECT all other traffic
All packets which are not stated as ACCEPT in previous rules are denied. If this rule is not enabled all
packets which are not stated as DROP/REJECT are permitted.
In following example 8 traffic flows are defined under firewall rules. In the picture presented with green
are marked permitted packets and with red blocked.